Symptom determination apparatus and storage medium for determining symptom

Abstract

A symptom determination apparatus according to the present embodiment includes an EEG feature detection section and a symptom determination section. The EEG feature detection section detects one or a plurality of frequency components of an EEG signal in a certain brain area of a subject. The symptom determination section determines a depressive symptom in the subject based on the intensity of the one or plurality of frequency components of the EEG signal detected by the EEG feature detection section.

1 . A symptom determination apparatus comprising:
 an electroencephalography signal detector for detecting one or a plurality of frequency components of an electroencephalography signal in a certain brain area of a subject; and   depressive symptom determinator for determining a depressive symptom in the subject on a basis of intensity of the one or plurality of frequency components of the electroencephalography signal detected by the electroencephalography signal detector.   
     
     
         2 . The symptom determination apparatus according to  claim 1 , wherein the depressive symptom determinator determines a depressive symptom in the subject on a basis of a correlation between the one or plurality of frequency components of the electroencephalography signal detected by the electroencephalography signal detector and the one or plurality of frequency components of an electroencephalography signal that serves as a reference for determining a depressive symptom. 
     
     
         3 . The symptom determination apparatus according to  claim 1 , wherein the electroencephalography signal detector detects the plurality of frequency components of the electroencephalography signal, and
 wherein the depressive symptom determinator determines the depressive symptom while giving priority, as a determination reference, to a relationship of intensity of, among the plurality of frequency components of the electroencephalography signal detected by the electroencephalography signal detector, a frequency component at a certain frequency over relationships of intensity of the frequency components at other frequencies.   
     
     
         4 . The symptom determination apparatus according to  claim 1 , wherein the electroencephalography detector detects the plurality of frequency components of the electroencephalography signal, and
 wherein the depressive symptom determinator determines the depressive symptom in the subject on a basis of a result of comparison of intensity between, among the plurality of frequency components of the electroencephalography signal detected by the electroencephalography signal detector, a frequency component in a low-frequency range and a frequency component in a high-frequency range.   
     
     
         5 . The symptom determination apparatus according to  claim 1 , wherein the depressive symptom determinator determines a level of severity of the depressive symptom in the subject. 
     
     
         6 . The symptom determination apparatus according to  claim 1 , wherein the depressive symptom determinator corrects, if the subject takes a medicine, a determination reference for determining the depressive symptom in the subject on a basis of an effect of the medicine taken by the subject. 
     
     
         7 . A non-transitory storage medium encoded with a computer-readable program that controls a processor of a computer to execute processes comprising:
 an electroencephalography signal detection processing for detecting one or a plurality of frequency components of an electroencephalography signal in a certain brain area of a subject; and   a depressive symptom determination processing for determining a depressive symptom in the subject on a basis of intensity of the one or plurality of frequency components of the electroencephalography signal detected by the electroencephalography signal detection processing.